Online calculator that calculates the perimeter of a circle from its radius.

perimeter_circle online

The calculator is able to **calculate online the perimeter of a circle**.
The **perimeter of a circle** is given by the formula `2*pi*r`,
where r is the radius of the circle. The perimeter of a circle is the length of the circle.
The length calculator supports numeric but also literal expressions.

The length calculator is able to calculate the perimeter of a circle, the calculated length is returned in exact form and in approximate form.

Calculation of the perimeter of a circle of radius 3 is done by entering the following formula perimeter_circle(`3`).

The length calculator is able to do symbolic calculations or literal calculation. To calculate, for example, the perimeter of a circle of radius 1+x, enter the following formula perimeter_circle(`1+x`) ,after calculation the result is returned.

perimeter_circle(radius)

perimeter_circle(`3`). , returns `6pi`

Calculate online with perimeter_circle (perimeter of a circle)
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